16908379120640 has 352 divisors, whose sum is σ = 49621480934400. Its totient is φ = 5398946611200.

The previous prime is 16908379120603. The next prime is 16908379120663. The reversal of 16908379120640 is 4602197380961.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39966215 + ... + 40387065.

Almost surely, 2^{16908379120640} is an apocalyptic number.

16908379120640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16908379120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24810740467200).

16908379120640 is an abundant number, since it is smaller than the sum of its proper divisors (32713101813760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16908379120640 is a wasteful number, since it uses less digits than its factorization.

16908379120640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420961 (or 420943 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 16908379120640 in words is "sixteen trillion, nine hundred eight billion, three hundred seventy-nine million, one hundred twenty thousand, six hundred forty".